Notebook freezes on shutdown, brightness issues

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Notebook freezes on shutdown, brightness issues

Postby robin92 on Mon Jul 16, 2012 5:12 am

Hello everyone,

I've been using Linux for several months, but it's my second day with this particullar distro. I must say I like it but I suffer from two unresolved issues which have a serious impact on deriving pleasure from using this OS.

1. This is a top priority issue: computer randomly either freezes on shutdown or keeps printing strange things in a loop. I really don't know what to do with this matter or even what more info to provide so any help is more than appreciated.

[SOLVED]
2. Classic laptop brightness issues. Linux starts with full brightness and there's no way I can reduce it (neither through notebook's functional keys nor through applications). I tried changing /etc/default/grub from
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quite splash"
to
Code: Select all
GRUB_CMDLINE_LINUX_DEFAULT="quite splash acpi_backlight=vendor"
but nothing happened.

I am using Linux Mint 13 "Maya" Cinammon on a TOSHIBA L650-1NU notebook.

EDIT: Successfully solved second issue by adding
Code: Select all
"acpi_osi="
in spite of
Code: Select all
"acpi_backlight=vendor"

EDIT: I've taken a photo of that strange text during shutdown. Take a look http://dl.dropbox.com/u/90959340/strange-thing.jpg
EDIT: I managed to discover what is causing the first issuse - it's FGLRX Radeon drivers from repository (Additional drivers section). When I downloaded the newest from AMD website and installed them everything worked just fine. What's more, it occured to me that second problem could be caused by the driver as well. I checked this and was right. However, after updating Linux Mint my system crashed again. I've lost a bottom panel as well as window decorations though I am still able to open folders and so on.
robin92
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